With question marks hanging over James Worpel's availability ahead of Round 22, we've taken a look at who might come in if the 2019 Peter Crimmins Medallist is unable to prove his fitness in time. 

AIA Vitality Update: Star Hawk forced to prove fitness ahead of Dogs clash

Jai Newcombe burst onto the scene in his Round 13 debut against Sydney, registering a record 14 tackles to go with his 13 touches and four clearances.

He maintained his spot for the remainder of that four-week block before being left out of the Round 17 side. 

An unused medical sub in Round 18, Newcombe has since been plying his trade in a stop-start reserves program.

But with Worpel's hypothetical absence, this hard-nosed 20-year-old figures as the most obvious like-for-like replacement.

Then there's Denver Grainger-Barras, the first of a trio of youngsters who were left out of last week's side due to management reasons.

Last year's Pick 6 had played five of the previous six games prior to him missing the win over Collingwood on Sunday.

The Western Australian has made a strong first impression in his debut season in the brown and gold and, although he is not as much of an obvious swap for a midfielder, you can imagine how the Hawks could res-shuffle the line-up to accomodate Grainger-Barras' re-entry.

Tyler Brockman and Ned Reeves are the other two that make up this managed trio.

Reeves and Brockman have featured in five and nine games respectively in what has also been their first campaigns including a taste of senior football.

With 27cm of height separating the pair, it is an illustration of the diversity of options the Hawks match committee has in front of it as Clarkson and his crew formulate their side that will be looking to topple the Western Bulldogs this weekend.